touch: Allow setting the timestamp to -1.

Note that VFS internally interprets a timestamp of -1 as “do not set”,
so this has no effect, but at least touch won't incorrectly reject the
given date / t

touch: Allow setting the timestamp to -1.

Note that VFS internally interprets a timestamp of -1 as “do not set”,
so this has no effect, but at least touch won't incorrectly reject the
given date / time (1969-12-31 23:59:59 UTC) as invalid.

While here, fix some style issues.

MFC after: 1 week
Reviewed by: allanjude
Differential Revision: https://reviews.freebsd.org/D44504

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Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals.

Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals. These copyright strings are present in the comments and
are largely from CSRG's attempt at adding their copyright to every
binary file (which modern interpretations of the license doesn't
require).

Sponsored by: Netflix

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usr.bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a pe

usr.bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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Remove $FreeBSD$: two-line .c pattern

Remove /^#include\s+<sys/cdefs.h>.*$\n\s+__FBSDID\("\$FreeBSD\$"\);\n/

touch: don't leak descriptor if fstat(2) fails

If fstat(2) fails the close(2) won't be called, which will leak the
file descriptor.

The idea was borrowed from OpenBSD, where similar patch
was appli

touch: don't leak descriptor if fstat(2) fails

If fstat(2) fails the close(2) won't be called, which will leak the
file descriptor.

The idea was borrowed from OpenBSD, where similar patch
was applied for futimens(2).

MFC after: 1 week

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Merge ^/head r325999 through r326131.

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier f

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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Merge ^/head r314420 through r314481.

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

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Merge sync of head

Merge from head

Merge r278538 through r279514.

MFH: r278593-r278966

Sponsored by: The FreeBSD Foundation

Merge ^/head r278756 through r278915.

touch: Fix some subtle bugs related to NULL times fallback:

* Do not subvert vfs.timestamp_precision by reading the time and passing
that to utimensat(). Instead, pass UTIME_NOW. A fallback to a N

touch: Fix some subtle bugs related to NULL times fallback:

* Do not subvert vfs.timestamp_precision by reading the time and passing
that to utimensat(). Instead, pass UTIME_NOW. A fallback to a NULL times
pointer is no longer used.

* Do not ignore -a/-m if the user has write access but does not own the
file. Leave timestamps unchanged using UTIME_OMIT and do not fall back to
a NULL times pointer (which would set both timestamps) if that fails.

Reviewed by: bde

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Merge from HEAD

Merge ^/head r277327 through r277718.

MFhead @ r277659

cp,mv,touch: Set timestamps with nanosecond precision.

This uses utimensat().

Merge from head

IFC @ r254014

IFC @253398

Merge fresh head.

Constify where appropriate.

Reported by: emaste
Approved by: cperciva (mentor)
MFC After: 3 days

Cleanups to touch.c
- use const where appropriate
- use static where appropriate
- use explicit checks checks for error conditions

Reviewed by: sbruno
Approved by: cperciva (mentor)
Obtained by:

Cleanups to touch.c
- use const where appropriate
- use static where appropriate
- use explicit checks checks for error conditions

Reviewed by: sbruno
Approved by: cperciva (mentor)
Obtained by: DragonFlyBSD

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